Camera attachment



July 7, 1931. T. PALLESON CAMERA ATTACHMENT Filed Oct. .5, 1929 2Sheets-Sheet 1 Inventor 17 n 0mm; Pailaron I By A tiorney y 7, 1931- T.PALLESON. 1,813,314

CAMERA ATTACHMENT Filed Oct. :5. 1929 2 Sheets-Sheet 2 Inventor l8 20 7077105 Pal/68072 Patented July 7, 1931 UNITED STATES PATENT OFFICETHOIAB PALLESON, 01' 8001714, CALIFORNIA CAMERA ATTACHMENT Applicationfled October 3, 1928. Serial Re. 897,028.

films are employed for taking ictures.

In the usual t pe of camera ound on the market at this time, the back ofthe roll of film is numbered to indicate the distinct exposure areas orfields and when the film is properly placed on the reel in the camera,the numbers are consecutively exposed through a window to enable theuser to bring the exosure areas into play in proper order. It is amatter of common knowledge, however, that throu h forgetfulness ormistake, the film is ina vertently not turned after each exposure, theresult is that two pictures are frequently taken on the same area of thefilm. is is annoying, expensive and ob3ect1onable.

With the foregoin in mind I have evolved and produced a simp e,inexpensive appliance that can be attached to the housing of the cameraon the exterior in a position to cooperate with the shutter tri orfinger lever so that the user can readi y determine how man pictureshave been taken and whether the lm is properl set for the next picture.This device there ore functions as an indicator or calculator and bodilyadds to systematic and errorless work.

In carrying the invention to efi'ect I have developed what I believe tobe a practicable structure which is susceptible of application to theexterior of the camera without uiring alterations and which is positivean deendable in action and'otherwise capable of lfilling therequirements of a device of this character.

The articular construction and arrangement 0 elements will become morereadily apparent from the following description and drawings.

In the drawin Figure 1 is a side elevational view of a conventionalcamera with position.

Figure 2 is a top plan view of the same,

Figure 3 is a sectional view through the attachment itself.

Figure 4 is an elevational view of the rotar; ratchet wheel orindicator.

igure 5 is an edge view of the structure seen in Figure 3 observing thesame in the direction from left to right.

Figure 6 is a horizontal section centrally through the structure seen inFigure 5.

Figure 7 is a perspective view of one of the details.

Referring now to the drawings by numerals it will be seen that thecamera is generally designated by the reference character 8 and is ofthe usual construction and includes an actuator 9 for the winding spool(not shown). The reference character 10 designates a sight window and 11a lever or tri such as usually provided for actuating the shutter ormechanism by hand. The improved attachment is generally designated bythe reference character 12 and as before indicated the same cooperateswith the finger lever 11. As seen in Figure 3 this attachment comprisesa disc like hollow casin 13 of ap ropriate material having a centra izedshag 14 journaled in suitable bearings and carrying a rotary indicator15. This is provided with peripheral teeth and therefore functions as aratchet wheel. Moreover it isformed at one side with a multiplicity ofconsecutive graduations 16 adapted to successively register with a sightwindow '17 as represented in Figure 1. Mechanism is rovided for actuatithis indicator throng the medium of the ever 11. This preferablycomprises an actuator gem erally designated by the reference character17 and this com rising a shoe 18 of the construction seen in igure 7which has a portion slidable in a peripheral arcuate slot 19 formed inone side of the casing. On the interior of the h e i a b k 20 whichengages with a the device in operative hooked end of a flat spring. 21anchoredthe casing. This is a return spring for theactuator 17. Theactuator is also provided 14 and located on the exterior of the casing13 for rotating the disc by hand to set the same at the desired pointbefore stalting.

With this arrangement it is obvious that as each picture is taken or thefilm exposed, the operator pushes down on the lever 11 in the usual waObviously, through the medium of the sli able actuator 17' the latter ismoved down with the lever. This pushes the finger 22 against the ratchetwheel 15 and turns it one step. The pawl24 prevents retrograde rotation.The result is that the numerals or indicators 16 are successivelyexposed through the sight opening 17 to indicate the number of picturestaken up to a given time. With the aid of this device even though theuser is ne ligent in taking pictures, the device will s ow how mayexposures have been made.

It is thought that by carefully considering the description inconnection with the drawings, a clear understanding of the construction,operation and features and advantages of the improvement will 'be quiteclear to persons skilled in the art to which the inven- .:tion relates.Therefore, a more lengthy de- .SCIIklIFtlOH is regarded as unnecessary.

inor changes in sha e, size, material and rearrangement of detai scoming within the field of invention claimed may be resorted to inactual practice if desired.

I claim p I An indicating attachment of the character described forcameras, a circular casing adapted to be mounted on thej'camera adjacentthe shutter operating lever thereof and having an observation window inone side 50 and a peripheral slot, a ratchet wheel mounted for rotation1n the casing having indicating np mei fi'g ls "on one side thereof forsuccessive registry with the window upon actuation of the ratchet wheel,a shoe slidably mounted for reciprocating movement on the innerperiphery of the casln and having an integral rili thereoii dispose forlongitudinalslidin'g movement in the slot-,- means for operativelyconnectmgthe shoe to the shutter lever for actuation thereby in onedirection, a resilient pawl mounted on the shoe for movement thereWithand having its free end opcratively engaged with the periphery of theratchet wheel in a manner to actuate said wheel in a step by step mannerupon reciprocatory cured thereto and its free end terminating in a hookopcratively engaged with the first named hook in a manner to return theshoe to inoperative position.

In testimony whereof I affix my signature.

THOMAS PALLESON.

